A few more GCC specific test fixes as per logged PRs:
- TestNamespace expected to fail due to PR-15302
- TestCPPBool and TestUnsignedTypes updated to handle GCC style debug information
- TestRvalueReferences expected fail due to GCC (4.7) not outputting rvalue-reference debug information
- TestDataFormatterStdVBool expected to fail due to PR-15301



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@175551 91177308-0d34-0410-b5e6-96231b3b80d8